cloak vs coat

cloak

verb
  • To cover as with a cloak. 

  • To cover up, hide or conceal. 

  • To render or become invisible via futuristic technology. 

noun
  • A long outer garment worn over the shoulders covering the back; a cape, often with a hood. 

  • That which conceals; a disguise or pretext. 

  • A blanket-like covering, often metaphorical. 

  • A text replacement for an IRC user's hostname or IP address, making the user less identifiable. 

coat

verb
  • To cover like a coat. 

  • To cover with a coating of some material. 

noun
  • Canvas painted with thick tar and secured round a mast or bowsprit to prevent water running down the sides into the hold (now made of rubber or leather). 

  • A covering of material, such as paint.ᵂᵖ 

  • A coat of arms.ᵂᵖ 

  • An outer garment covering the upper torso and arms.ᵂᵖ 

  • The habit or vesture of an order of men, indicating the order or office; cloth. 

  • A coat card. 

  • The fur or feathers covering an animal's skin.ᵂᵖ 

How often have the words cloak and coat occurred in a corpus of books? (source: Google Ngram Viewer )